Which pair is wrong?

Answer: Option A

A. C₃ plants include some of the most important sources of calories all over the world: cowpea, cassava, soybean and rice. Grasses, such as maize, sorghum and sugarcane, are widely cultivated in modern agriculture are C₄ plants.
B. Calvin cycle ⟶ PGA. Phosphoglyceric acid, PGA is the conjugate acid of 3-phosphoglycerate or glycerate 3-phosphate. This glycerate is a biochemically significant metabolic intermediate in both glycolysis and the Calvin-Benson cycle.
C. Hatch and Slack cycle ⟶ OAA. The Hatch and Slack pathways are also known as the C₄ pathway because the first stable product of this pathway is 4-C carbon compound OAA (Oxaloacetate ).
D. C₄ - Kranz anatomy. The C₄ biochemical pathway relies on a specific suite of leaf functional properties, often referred to as Kranz anatomy.